Inconsistency between perfmonCollectCounterData and RTMT values

Created by cdnadmin on Jan 24, 2014 11:56 PM. Last modified by cdnadmin on Jan 24, 2014 11:56 PM.

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Created by: Mohamed Nadjib HAMMOUDI on 16-05-2012 05:03:17 AM Hello,

I'm developping AXL access to get perfmon objects (Processor object for instance) and it works just fine, but when comparing values returned from Perfmon web service (perfmonCollectCounterData operation) and those returned from RTMT it is clear that they are wrong because all values are 0!!!Here is the XML returned from the PerfmonPort.

Finally i found the explanation. Percentage counters require two samples to determine the average between the samples, but you have to use the session-based Perfmon operation (perfmonCollectSessionData) with 4 sec minimum between the samples.